US2888857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for producing optical effects
Assignee: TIX TELEVISION FILMS Inc
•
Filing: 1955-02-24
•
Granted: 1959-06-02
•
Expires: 1975-02-24
Abstract
No abstract record available.
Inventors
- 👤 Robert L Stevenson
- 👤 Peter L M Barker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:51
CPC Classifications
G; G03; G03B; G03B21/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2730565A
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US2697379A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |